Acidic gas capture by diamines

Details Acidic gas capture by diamines Acidic gas capture by diamines

2011-05-10

2011-05-10

Smith, Duane (Department: 1776)

Gas separation: processes

Liquid contacting

And degasification of a liquid

C095S169000, C095S236000, C423S228000, C252S060000

Reexamination Certificate

active

07938887

ABSTRACT:
Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.9 moles per mole of piperazine.

REFERENCES:
patent: 4064151 (1977-12-01), Hedaya et al.
patent: 4217237 (1980-08-01), Sartori et al.
patent: 4217238 (1980-08-01), Sartori et al.
patent: 5492683 (1996-02-01), Birbara et al.
patent: 5622681 (1997-04-01), Grierson et al.
patent: 6436174 (2002-08-01), Grossmann et al.
patent: 2007/0028774 (2007-02-01), Rochelle
patent: 2007/0044658 (2007-03-01), Rochelle et al.
patent: 2008/0127831 (2008-06-01), Rochelle et al.
patent: WO2007045679 (2007-04-01), None
“CO2 Capture by Absorption with Potassium Carbonate, First Quarterly Report 2007”, DOE Progress Report 41440R20 for Cooperative Agreement DE-FC26-02NT41440, Apr. 27, 2007.
Oynekan, Rochelle, “Alternative Stripper Configurations for CO2 Capture by Aqueous Amines”, AlChE Journal, Accepted, 2007.
Yasuyuki Yagi, et al., “Development and Improvement of CO2-Capture System”, Presented at the 8th GHGT Conference, 2006.
International Search Report to PCT/US09/45075 dated Aug. 14, 2009.

Affiliated with

Also associated with

Rating

Acidic gas capture by diamines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acidic gas capture by diamines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acidic gas capture by diamines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2666463